Galactic Orbits and Structures

What is the approximate number of stars in the Milky Way galaxy?

• 7 billion

• 200 billion

• 1 trillion

• 100 million

What shape does the orbit of most stars in the spherical component of the Milky Way take?

• Circular

• Highly elliptical

• Square

• Triangular

Tags

NGSS.MS-ESS1-2

What is the spherical component of the Milky Way galaxy also known as?

• Disk

• Halo and bulge

• Spiral arms

• Core

What is the primary shape of the Milky Way galaxy's disk component?

• Spherical

• Elliptical

• Pancake-like

• Cubic

How do stars in the disk of the Milky Way typically orbit?

• In random directions

• In nearly circular orbits within the plane of the galaxy

• In highly elliptical orbits

• In vertical orbits

Tags

NGSS.MS-ESS1-2

What is the main difference between the orbits in the spherical component and the disk of the Milky Way?

• Stars in the spherical component have circular orbits, while stars in the disk have elliptical orbits.

• Stars in the spherical component have random orbits, while stars in the disk have nearly circular orbits.

• Stars in the spherical component have vertical orbits, while stars in the disk have horizontal orbits.

• Stars in the spherical component have fixed orbits, while stars in the disk have changing orbits.

Tags

NGSS.MS-ESS1-2

What analogy is used to describe the movement of stars in the disk of the Milky Way?

• A roulette wheel

• A spinning top

• A bouncing ball

• A swinging pendulum

Tags

NGSS.HS-ESS1-4

What is the primary force that caused the original gas cloud of the Milky Way to fragment?

• Electromagnetic force

• Gravitational force

• Nuclear force

• Frictional force

Tags

NGSS.HS-PS2-4

What is the term used to describe the stars and star clusters left behind in the halo after the disk formed?

• Galactic remnants

• Stellar debris

• Globular clusters

• Cosmic dust

What is the main characteristic of the stars' orbits in the disk of the Milky Way?

• They are tilted at random angles.

• They are highly elliptical.

• They remain in the disk itself.

• They are vertical.

Tags

NGSS.HS-ESS1-4